MISSOURI CITY, Texas — A Houston-area school bus driver faces a review after she allegedly became upset with the children, pulled over, threw the keys to a student and called for a replacement driver.

KPRC-TV reports the Fort Bend Independent School District has removed the driver amid the investigation of Tuesday's incident.

School district officials said Thursday that the driver became frustrated while hauling 12 students home from Baines Middle School in Missouri City, got off the bus and called a supervisor to send a replacement. . The students apparently were being loud. Another driver completed the route.

School officials say the safety of students is the highest priority and appropriate actions will be taken upon completion of the investigation.